When virtual scrolling is enabled, there is a problem with group footer aggregates. When i scroll table the aggregates (sum) are rendering only for visible data.

gridOptions.dataSource.pageSize = 100;
gridOptions.scrollable = {
    virtual: true
};

 

Example in screenshots.

Hello Daniel,

Please note that grouping is not supported when virtual scrolling is enabled. If grouping is a requirement for your application I would recommend using paging instead of virtual scrolling for the Grid.

If you would like more information on Virtual Scrolling and its limitations you would find the article below interesting.

• http://docs.telerik.com/kendo-ui/controls/data-management/grid/appearance#virtual-scrolling

Regards,
Viktor Tachev
Progress Telerik